> Reincarnate in a parallel dimension
> Don't give a single fuck about the suffering of your family
Why is he such a grade A a-hole?
Because they are such disgusting pathetic NEETS their parents would be glad to see the end of them. Probably thought they went to hang themselves in some secluded forest.
>MC is about to confess
>is sent to another world
>spends his entire life trying to find a way to come back
>can't return, dies of old age
>reincarnates in the same world and remembers his life
>uses his knowledge to become OP mage
>finally manages to find a way back to his world
returned at the wrong point in time and after seeing his young self about to get hit by a truck, uses a spell to send him to the world he came from
There's a manga
chapterabout this already
"Yuusha Isagi no Maoutan"?
He gets summoned to another world as a hero, defeats Maou, then when he finally proposed to the girl he gets summoned again 20 years in the future. By Maou's daughter.
Story is him trying to find his girl.
Why the fuck would you care how your parents felt if you have megumin?
What's the point of constantly worrying about his family when he's dead in that lifetime with no prospect of returning to the previous life even if reincarnated?
This world might just as well be the his afterlife.
>No prospect of returning to the previous life even if reincarnated
They're sending dead nips to that world with resurrection as a possible reward. If they defeat the Demon King they're granted a wish which they can use to return to Japan
Of course it's unlikely that Kazuma would wish for that, considering he just wants to live a comfortable life in his mansion